Low permeability separable fastener



May 19, 1953 L. H. MORIN LOW PERMEABILITY SEPARABLE FASTENER Filed Sept.10, 1945 ENT Mam/v ATTOR Y Patented May 19, 1953 UNITED STATES PATENTOFF ICE LOW PERMEABILIV'IY SEP RAB EJFASTENER x Loni 51H. Morin, Bronx,N1 Application September 10, 1945, Serial No. 615,261

This invention relates v to separable fasteners, particularly of thetype employingwhatlterrn coreless scoops arranged along the stringers ofthe fastener. More particularly, the invention deals'with scoops havingoffset coupling side portions forming flat shoulders centrally andlongitudinally of the scoops withthe shoulders of one scoop overlappingthose a of adjacent scoops in establishing a tight or substantiallysealed coupling between the scoops. .A lso,.and as illustrated in thedrawings of the forms of the invention,;.hereinafter; described, thescoops are preferably;constructed; and arranged so as to formasubstantially tightseal with the .edge portions of the respective tapesor mounting members to which the scoops are secured.

' The novel; features of the invention will be best understood from thefollowing, description, when taken together with the accompanyingdrawing,- in which certain embodiments of. the invention are disclosedand in which theseparate parts are designatediby suitable referencecharacters in each of ,the views In such drawings:

a Fig. 1 is a partially sectioned elevational view of a few coupledscoops on; adjacent edges of two stringers shown on. ascale muchenlargedover life-size; I I

Fig. 2 is a partial sectionon the line..'2-2 .of Fig. 1 simply showingthe .scoop structure at the section line indicated and omittingallbackground illustrations; e I

Fig. 3 is a perspective view of one of the scoops as arranged on thebeaded edge of astringer; Fig. 4'is. a view similar toFig. 3 showing amodification;

ing.;only a single. scoop .as constructed in Fig.

4; and a Fig. 6 is a view [similar to Fig.2 showing only three scoopsand showing a modification.

The present application constitutes a continu-' least one surface of thescoop to receive a projec tion on the opposed surface of an adjacentscoop to couple the scoops together against'transverse separation. Theuse" of cores of this type and kind, in some'instance's, isobjectionableand this is particularly true :in attempting tprfo'rm a large,

consideration and, 'particu- 15 Claims. (01. 24-20513) .wardly of theprojections I4, J4 are V-shaped recesses .l5, l5. disposed on upper andlower sur- .,V I Y,.35 Fig. 5 is a sectional. view similar to Fig.2shownumber of castings simultaneously upon the beaded edge of a stringertape. By dispensing with the use. of cores, it is possible to materiallyincrease the, ,nuinberof individual sco ps formed in ;.one l casting 1operation v and to v provide the coupling jengagement. preventingtransverse separation by: simply offsetting the side portions of. eachscoopfbody to "form prol'l cting flanges or walls on theeenter line ofthefscoopsf; estab:

lishing between adjacentpoupled scoops an'interlock which retains thescoops against transverse separation. .fI'hisresult nay'be earried outin; scoops of the more. or less conventional transverselystra'ightconstruetion or with scoops of...what might be termed. vshapedcross sec tional form, as illustrated in Figs. 4 and 5 of the drawingfl, A

.Considering .Figs. "1-3 inclusive} have shown atllll, I0" two smallportions of stringers, having" beaded .edgesll, ll, .to which areattached scoops i2, 12', As both stringers and the scoops thereonare 0ttheisame construction, the illustration of. one scoop, for Millustrative purposes .ine perspectiveJin Fig. 3, is allthat isessential. InIthi s figure, the tape gillpwith .theiscoop i2 isshownfarranged upon the beaded edge ll.

.Eachfscoopj is of. what I term'the diamond head construction. [In otherwords, the outer ends of all thescoopsihavemore or lessdiamondshaped-coupling headsf l3, I, 3' defined by upper and {lowerV-sh'aped projections l4 l4' Infaces of the scoops whieh are adaptedtoreceive the hea'ds l 3',"l3 of the scoops of an opposed stringer ortheprojections 14f thereon,

as "will clearly appear from a consideration, of J1 of the drawing...While not essential to the enjoyment of .thelother advantages of theconstruction, it is preferred'thatftheheads l3,

"13" are soforrnedjas to extend to a point, establishingja ifirm,abutting, engagement with; the beaded edges of opposed 'st'ringer's theends is of -theheads l3 abutting the head I I and the ends 16' of heads[3' abutting the bead H. This closes the-scoop gap between the beads H,H transverselywith respect to the stringers.

The head and recess; construction of the scoops forms the. couplingbetween the sccopswhich prevents lateral or. pull-apart separation ofthe stringers; ,Transverse separation, on the other hand. is-preventedinthe manner to be described.

Considering Fig; 3.0: the drawing. it I will ,be seen that the scoopis-formed as, if composed of halves or side ;portions ;verti eallyoff-set with respect to each other. For convenience the side portion llof the scoop l2 may be termed the lower side portion and the sideportion l8 may be termed the higher side portion. This offsetrelationship of the side portions l1 and i8 forms centrally andlongitudinally of the scoop a raised coupling wall or shoulder I9 at theupper surface of the scoop and a downwardly extending coupling wall orshoulder 20, atthe lowersurface of the scoop. Such coupling walls orshoulders may also be defined as coupling flanges. In Fig. 2 of thedrawing, which shows two of the scoops 52, as well as two of the. scoopsl2 in cross-section, reference numerals H, [8, H! and 26' have beenapplied to indicate'atheelements of scoops l2 corresponding to theelements I! to 2d of scoops I2.

The coupling walls or shoulders I9, IT-and 20, 29 extend the full lengthof the scoops, that is, throughout. the mountingend portions as well asthe coupling end portions, as indicated in Fig. l of the drawing.

Now turning to the illustration in Fig.2, which shows a section througha few coupled scoops walls Is, it", 20, 20 0f adjacent coupled scoopswhich retain the scoops against transverse separation and, further,establishes a substantial seal between adjacent scoops throughout thefull length ofthe coupling ends, thereof and from the beaded edge of onestringer to the beaded able in many installations or uses of stringerswherein it is desirable to maintain a substantially complete closure. Itwill also appear'that, by reason of the outwardly tapered constructionin the walls of the projections and recesses, relat-ively large spaces2|, 2| (Fig. 2) are provided at opposite sides ofthe coupled stringerswhich provide for free bending or flexing of the stringers withoutinterference with the substantial closure achieved by the abuttingcontact between the walls or shoulders l9, I9,.2.0,2l1.

The modified structure shown in Fig. i is generally similar tov thestructure of Figs. 1-3 inclusive, but difiers from it in that, insteadof having each side portion of the scoop 'extendingperpendicularly to.side surfaces. of the stringer tapes,

the side portions 22, 23 of the modified scoop shown in Fig. 4 arearranged at angles to each other as appears more clearly in thecross-sectional view in Fig, 5.0f the drawing. In other words, thisangular relationship will give a more or less V-shaped cross-sectionalform to the scoop and this cross-sectional form, in itself, issufficient toretain the coupled scoops against transverse separation.However, the Same type of substantial seal. and inter-lock, as abovedescribed is provided by offsetting the side portions 22, 23 one withrespect to the other centrally and longitudinally of the stringer tape24 to form a raised coupling wall or shoulder 25, similar to the wallsor shoulders I9, l9,'-and a downwardly extending coupling wall orshoulder '26, similar to the wallor shoulders 20, 20; Each side portion22 and 23 of the scoop will'liave diamondshaped heads, 21 similartotheheads 13, I3" and opposed recesses 28 inwardly of said head andsimilar to therecesses l5, l5. Itwill be understood that scoops of theform of Figs. & and 5 are adapted to mesh and interlock with identicallyformed scoops of a companion stringer. As before, the heads of thesescoops may be of such length as to abut the tape edges of the respectivestringers.

By reason of the offsetting of the scoop sides or halves centrally andlongitudinally of the tape, the scoops can be formedasdiecastings on thetape, each side or half being formed by a die part with the dies havinga parting line centrally and longitudinally of the scoops, thusdispensing with the use of cores of any type or kind.

For convenience, and to distinguish from the forms already described,the scoops of the Fig. 6 modification -may b'e defined as laterallytilted with respect to the tapes. As in the Fig. 5 form the scoop halves29, 30 extend at an angle (i. e. other than from the tapes; but, as inthe Fig. *2 form, the axes of the halves are in substantial alignment.As in both the previous forms, the halves are vertically off-set to formupwardly extendingooupling walls 3'i' and downwardly 'errtendingcoupling walls 82, similar to the walls '25 and 26. Upper and lowersurfaces of each side portion or scoop halve 29, 30 converge to outersides thereof; thus forming clearances as at '33 and 34 which willprovide for flexure'or bending ofth'e stringers. Aside from thestructural differences above defined, the structure of the scoops inFig. 6"may'be precisely the same as that-of the forms already described.

Having "fully described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In separable fastener stringers having scoops spaced "along one "edgethereof, said scoops havingcoupling end portions projecting beyond theedge of the tape of the stringer, each of-said scoops being dividedalong the entire length thereof into right hand and'lett handlongitudinal side 'portions,-one or said side portions being offset withrespect to "the other side portion in .a directionextendinglong-ltudinally'of the tape, both'side portions of eac'h'scoop having onopposed surfaces thereof alined projections and recesses, theprojections and recesses of said scoops providing means for couplingopposed stringers to retain *the stringers against lateral separation,and the offsetting of the side portions of said scoops providingcoupling walls on upper and lower surfaces of'th'e scoops centrally andlongitudinally of the full length thereof, said coupling walls beingadapted to retain coupled scoops against transverse separation.

2. In separable fastener stringers having scoops spaced along one edgethereof, said scoops having coupling-end portions projecting beyond theedge of the tapeof the stringer, the entire coupling end portion of eachscoop being divided centrally and longitudinally thereof into sideportions, one of said side portions being offset with respect to theother side portion in adirection extending longitudinally of the tape,both side portions of-each scoop having on opposed surfaces thereofalined projections and recesses, the projections and recesses of saidscoops providing means for coupling opposed stringers for retaining thestringers against lateral separation, the offsetting of the sideportions of said scoops providing coupling walls on upper and lowersurfaces of the scoops centrally and iongitudinally of the full lengthofthe coupling end portions thereof, said coupling walls being adapted to;retain coupled scoops against transverse separation, andsaid sideportions of a scoop being disposed angularly to each other to form acoupling end portion'of substantially V-shaped cross-sectional form.

3. A scoop for a separable fastener stringer,

against lateral separation, one of said side por- 'tions being offsetwith respect to the other side portion in a directionextendinglongitudinally of thetape, and upper and lower surfaces ofthe scoophaving centrallyand longitudinally of the full length thereof couplingflanges for retaining coupled scoops of a pair of stringers againsttransverse separation.

4. In a pair of separable fastener stringers having scoops spaced alongthe edges thereof, said scoops having coupling end portions projectingbeyond the edges of the tapes of the stringers, the entire coupling endportion of each scoop being divided centrally and longitudinally thereofinto side portions, one of said side portions being offset with respectto the other side portion in a direction extending longitudinally of thetape, both side portions of each scoop having on opposed surfacesthereof alined projections and recesses, the projections and recesses ofsaid scoops providing means for coupling opposed stringers for retainingthe stringers against lateral separation, the offsetting of the sideportions of said scoops providing coupling walls on upper and lowersurfaces of the scoops centrally and longitudinally of the full lengthof the coupling end portions thereof, said coupling walls being adaptedto retain coupled scoops against transverse separation, the outer endsof the coupling end portions of the scoops abutting the edges of theopposite tapes when the stringers are coupled together, and saidabutment in combination with said coupling Walls substantially closingthe space between said tape edges.

5. A scoop for separable fastener stringers having a mounting endportion and a coupling end portion, said scoop having on upper and lowersides a line of demarcation dividing the same centrally andlongitudinally throughout the full length thereof into offset sideportions, said side portions being offset in a direction extendinglongitudinally of the stringer tape, each side portion having on upperand lower surfaces alined projections, inwardly of which are alinedrecesses, said projections and recesses of one side portion being intransverse alinement with those of the other side portion, said offsetside portions forming on upper and lower surfaces of the scoop a pair ofcontinuous coupling walls centrally of the same throughout the fulllength thereof, one wall being formed by one side portion of the scoopand the other wall by the other side portion thereof.

6. A scoop according to claim 3 having a V- shaped cross sectionthroughout its entire length.

'7. A scoop according to claim 5 in which said side portions extendangularly to each other.

8. A scoop according to claim 5 in which the upper and lower surfaces ofeach offset side portion converge from said demarcation line to the freeedge of the side portion.

9. A scoop according to claim 5 in which each 'fromthe stringer tape;

8 offset side portion extends at an angle other than "10. A scoop forseparable fastener stringers havin a mounting end portion and a couplingend portion, said scoop having onupper and lower side s--a l ine ofdemarcation dividing the same centrally and longitudinally throughoutthe full length thereof"into offset side portionsysaid side portionsbeing'offset in a direction extending longitudinally of the stringertape,each side portion'havingmale and female coupling portions forpreventing pull-apart separation of said stringers, said offset sideportions forming on upper and lower surfaces of the scoop a pair ofcontinuous coupling walls centrally of the same and throughout the fulllength thereof, one wall being formed by-one side portion of the scoopand the other wall'by the'other side portion thereof.

" l1. Ascoop accordingtoclaim 10 in whicheach offset side portionextends at an angle other than 90 from the stringer tape and in whichboth said side portions lie in the plane passing through the transverseaxis of the scoop.

12. A scoop according to claim 10 in which each offset side portionextends at an angle other than 90 from the stringer tape and in whichsaid side portions lie in transverse axial planes which intersect.

13. In separable fasteners comprising a pair of stringer tapes havingscoops spaced longitudinally of adjacent edges of said tapes, saidscoops having coupling portions beyond said tape edges, said couplingportions of the scoops of a pair of stringers having interlocking meansfor coupling the stringers against lateral pull-apart separation, theimprovement which comprises scoops having scoop ends in abuttingengagement with tapes of opposed stringers, interengaging meansextending longitudinally of the full length of adjacent surfaces ofcoupled scoops for retaining the coupled scoops against transverseseparation, said interengaging means comprising a coupling flange onboth the upper and lower surfaces of each scoop, each scoop having atapered scoop section with the tapering extending from said flanges toboth longitudinal side edges of the scoop, and said interengaging meansin combination with said scoop ends abutting said opposed tapes servingto form a substantial closure by the coupled scoops between said tapeedges.

14. In separable fasteners comprising a pair of stringer tapes havingscoops spaced longitudinally of adjacent edges of said tapes, saidscoops having coupling portions beyond said tape edges, said couplingportions of the scoops of a pair of stringers having interlocking meansfor coupling the stringers against lateral pull-apart separation, theimprovement which comprises scoops having scoop ends in abuttingengagement with tapes of opposed stringers, interengaging meansextending longitudinally of the full length of adjacent surfaces ofcoupled scoops for retaining coupled scoops against transverseseparation, said interengaging means comprising a coupling flange onboth the upper and lower surfaces of each scoop, each scoop having atapered cross section with the tapering extending from said flanges toboth longitudinal side edges of the scoop, and said interengaging meansin combination with said scoop ends abutting said opposed tapes servingto form a substantial closure by the coupled scoops between said tapeedges, and the scoops of each stringer being of V-shaped cross-sectionalform. I

access:

15. In separable fasteners comprising a pair of stringer tapes havingscoops spaced longitudinally of adjacent edges of said tapes, saidscoops having coupling portions beyond said tape edges, said couplingportions of the scoops of a pair of stringers having interlocking meansfor coupling the stringers against lateral pull-apart separation, theimprovement which comprises scoops having scoop ends in abuttingengagement with tapes of opposed stringers, interengaging meansextending longitudinally of the full length of adjacent surfaces ofcoupled scoops for retaining coupled scoops against transverseseparation, said interengaging means comprising a coupling flange onboth the upper and lower surfaces of each scoop, each scoop having atapered cross section with the tapering extending from said flanges toboth longitudinal side edges of the scoop, and said interengaging meansin combination with said scoop ends abutting said opposed tapes servingto form a substantial closure by the coupled scoops between said tapeedges, and one longitudinal side portion of each scoop being arranged ata downward inclination with respect to the tape while the other sideportion is arranged at an upward inclination.

LOUIS MORIN.

References Cited in the file of this patent UNITED STATES PATENTS

